Home / 1,245,863.80-1,870,869.30-685,300.60

Finding the Fourth Proportional to 1,245,863.80, 1,870,869.30 and 685,300.60

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Solution

The fourth proportional to 1,245,863.80, 1,870,869.30 and 685,300.60 is: 1,029,091.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,863.80 : 1,870,869.30 = 685,300.60 : x
  2. Step 2: Convert to fraction form
    1,245,863.80/1,870,869.30 = 685,300.60/x
  3. Step 3: Cross multiply
    1,245,863.80x = 1,870,869.30 × 685,300.60
  4. Step 4: Simplify right side
    1,245,863.80x = 1,282,107,853,811.58
  5. Step 5: Solve for x
    x = 1,282,107,853,811.58/1,245,863.80
  6. Step 6: Final answer
    x = 1,029,091.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.